sockaddr在网络编程中，SOCKADDR_IN 后缀_IN代表什么意思，这种命名规则是什么

sizeof (struct sockaddr) sizeof (struct sockaddr_in)

都是 16字节 实际上这两个结构可以直接相互转换的。

struct sockaddr { u_short sa_family; /* address family */ char sa_data[14]; /* up to 14 bytes of direct address */ }; struct sockaddr_in { short sin_family; u_short sin_port; struct in_addr sin_addr; char sin_zero[8]; }; struct in_addr { union { struct { u_char s_b1,s_b2,s_b3,s_b4; } S_un_b; struct { u_short s_w1,s_w2; } S_un_w; u_long S_addr; } S_un;

SOCKADDR_IN的经典案例

服务端： int?main(){//创建socketint?sockfd?=?socket(PF_LOCAL,SOCK_DGRAM,0);if(sockfd?==?-1)perror("创建socket失败"),exit(-1);//准备通信地址struct?sockaddr_un?addr;addr.sun_family?=?PF_UNIX;strcpy(addr.sun_path,?"a.sock");//绑定intres=bind(sockfd,?(struct?sockaddr*)&addr,sizeof(addr));if(res==-1)perror("绑定失败"),exit(-1);printf("绑定成功 ");//通信(用读写文件方式)charbuf[100]={};read(sockfd,buf,sizeof(buf));printf("收到信息:%s ",buf);//关闭socketclose(sockfd);return?0;}客户端： int?main(){int?sockfd=socket(PF_LOCAL,SOCK_DGRAM,0);if(sockfd==-1)perror("创建socket失败"),exit(-1);struct?sockaddr_un?addr;addr.sun_family=PF_UNIX;strcpy(addr.sun_path,"a.sock");//连接int?res=connect(sockfd,(structsockaddr*)&addr,sizeof(addr));if(res==-1)perror("失败"),exit(-1);printf("成功 ");write(sockfd,"Hello,Socket!",14);close(sockfd);return?0;}

sockaddr 如何赋值

给你写了个函数做参考,仔细看看吧,我就不多解释了: #include int socketinit(const char *szIP,int nPort,SOCKADDR *pSockAddr) { if (!pSockAddr||!szIP) return -1; if (nPort<1) return -1; memset(pSockAddr,0,sizeof(*pSockAddr)); SOCKADDR_IN *addr=(sockaddr_in *)pSockAddr; addr->sin_family=AF_INET; if (szIP&&strlen(szIP)>0) { if (isalpha(szIP[0])) { hostent *remoteHost=gethostbyname(szIP); if (!remoteHost) { return -1; } addr->sin_addr= *((in_addr *)*remoteHost->h_addr_list); } else { addr->sin_addr.s_addr=_addr(szIP); } } else addr->sin_addr.s_addr=INADDR_ANY; addr->sin_port=htons(nPort); SOCKET nSocket; nSocket=::socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); if (nSocket==-1) { return -1; } return nSocket; } void main() { SOCKADDR s; socketinit("127.0.0.1",80,&s); }

Linux socket的几种地址结构 sockaddr与sockaddr

一般就 sockaddr_un /* UNIX domain */ sockaddr_in /* IPv4 */ sockaddr_in6 /* IPv6 */ .... 当然还有协议无关的 sockaddr_storage 一般都会强制转换 (struct sockaddr *)&sockaddr_xx .

在网络编程中，SOCKADDR_IN 后缀_IN代表什么意思，这种命名规则是什么

应该是的意思吧，msdn对SOCKADDR_IN的解释是这样说的: In the address family, this structure is used by Windows Sockets to specify a local or remote endpoint address to which to connect a socket. This is the form of the sockaddr structure specific to the address family and can be cast to sockaddr.